CN111550201A

CN111550201A - Slurry pipe manifold distribution system

Info

Publication number: CN111550201A
Application number: CN202010499363.XA
Authority: CN
Inventors: 周力帅; 顾欢; 王珏
Original assignee: Yancheng Jiaxin Petroleum Machinery Manufacture Co ltd
Current assignee: Yancheng Jiaxin Petroleum Machinery Manufacture Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2020-08-18

Abstract

The invention discloses a slurry manifold distribution system, which comprises three groups of slurry tanks, two ground manifolds, a circulating tank and a slurry remote distribution mechanism; the mud remote distribution mechanism consists of three mud pumps, each mud pump comprises a shell, and a liquid inlet, a well opening, a circulation opening and a piston assembly are arranged on each shell; the mud tank is connected with a liquid inlet of a mud pump, a through circulation port of the mud pump is connected with the circulation tank through a circulation pipeline, and the through well ports of the three mud pumps are communicated, wherein the through well ports of the two mud pumps are respectively connected with two ground manifolds and are provided with pipeline distribution valves; the scheme designs a set of mud manifold distribution system with a remote distribution mechanism, which can conveniently realize the distribution and control among a mud tank, a ground manifold and a circulating tank, form a passage in a drilling state and carry out pressure relief in a drilling stop state; the remote distribution mechanism can also control which ground manifold the mud goes to, and can meet the needs of actual drilling state.

Description

Slurry pipe manifold distribution system

Technical Field

The invention relates to a slurry manifold distribution system, and belongs to the technical field of petroleum drilling equipment.

Background

Most of the existing drilling mud manifolds are controlled and distributed through valves, the arrangement and distribution of pipelines and valves are complex, the operation and the control are inconvenient, and a large amount of manpower and material resources are wasted.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a slurry manifold distribution system.

In order to achieve the purpose, the invention adopts the technical scheme that: a slurry manifold distribution system comprises three groups of slurry tanks, two ground manifolds, a circulating tank and a slurry remote distribution mechanism; the mud remote distribution mechanism consists of three mud pumps, each mud pump comprises a shell, a liquid inlet, a well opening, a circulation opening and a piston assembly are arranged on each shell, and the piston assembly controls the liquid inlet to form a passage with the well opening or the circulation opening; the three groups of mud tanks are respectively connected with the liquid inlets of the three mud pumps, the through circulation ports of the three mud pumps are connected with the circulation tanks through circulation pipelines, the through well ports of the three mud pumps are communicated, the through well ports of the two mud pumps are respectively connected with the two ground manifolds, and pipeline distribution valves are arranged at the two through well ports connected with the ground manifolds.

Preferably, the two ground manifolds are respectively provided with a one-way check valve.

Preferably, a pipeline connecting the mud tank and the liquid inlet is provided with a passage connected with the circulating tank.

Preferably, the three mud pumps are arranged side by side, the drifting port of the middle mud pump is provided with a T-shaped three-way joint, the drifting ports of the mud pumps on two sides are connected with the T-shaped three-way joint of the middle mud pump through corner three-way joints, and the corner three-way joints of the mud pumps on two sides are connected with a pipeline distribution valve.

Preferably, the line distributor valve is a manual valve.

Preferably, the through circulation ports of the three mud pumps are connected through a right-angle tee joint.

Preferably, the piston assembly comprises a piston shell, an upper piston rod and a lower piston rod, and an upper piston slide block and a lower piston slide block are arranged in the piston shell; the upper piston rod and the lower piston rod penetrate through the well opening and the circulation opening, and the well opening flashboards and the circulation opening flashboards are arranged on the upper piston rod and the lower piston rod; the upper piston slide block drives the upper piston rod to move, and the lower piston slide block drives the lower piston rod to move.

Preferably, the rear end of the piston housing is provided with an indication rod cover, and the rear ends of the upper piston rod and the lower piston rod can extend into the indication rod cover.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

the scheme designs a set of mud manifold distribution system with a remote distribution mechanism, which can conveniently realize the distribution and control among a mud tank, a ground manifold and a circulating tank, form a passage in a drilling state and carry out pressure relief in a drilling stop state; the remote distribution mechanism can also control which ground manifold the mud goes to, and can meet the needs of actual drilling state.

Drawings

The technical scheme of the invention is further explained by combining the accompanying drawings as follows:

FIG. 1 is a schematic diagram of a slurry manifold distribution system according to the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic structural diagram of a remote slurry distribution mechanism according to the present invention;

fig. 4 is a schematic structural view of a slurry pump according to the present invention.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.

As shown in fig. 1, the slurry pipe distribution system according to the present invention includes three groups of slurry tanks 1, two surface manifolds 2, a circulation tank and a slurry remote distribution mechanism, the circulation tank is not shown in the figure, the two surface manifolds 2 are used for connecting to a derrick manifold, and one-way check valves are disposed in the two surface manifolds 2.

As shown in fig. 2-4, the mud remote distribution mechanism is composed of three mud pumps arranged side by side, and the mud pumps comprise a housing 3, wherein a liquid inlet 4, a through well opening 5, a through circulation opening 6 and a piston assembly 7 are arranged on the housing 3.

The three groups of mud tanks 1 are respectively connected with the liquid inlets 4 of the three mud pumps through pipelines, and the pipelines connecting the mud tanks 1 and the liquid inlets 4 are also provided with a passage connected with the circulating tank, and the passage is provided with a control valve.

The dredging hole 5 of the middle slurry pump is provided with a T-shaped three-way joint, the dredging hole 5 of the slurry pumps at two sides are connected with the T-shaped three-way joint of the middle slurry pump through corner three-way joints, and the corner three-way joints at two sides are provided with pipeline distribution valves 9 and are respectively connected with the two ground manifolds 2 through the pipeline distribution valves 9.

The through circulation ports 6 of the three mud pumps are connected through a right-angle tee joint and are connected with a circulation tank through a circulation pipeline 8.

The main body of the piston assembly 7 is a hydraulic piston cylinder, and the piston assembly 7 controls the liquid inlet 4 to form a passage with the well opening 5 or the circulation opening 6; the piston assembly 7 comprises a piston shell 11, an upper piston rod 12 and a lower piston rod 13, wherein an upper piston slide block 14 and a lower piston slide block 15 are arranged in the piston shell 11; the upper piston rod 12 and the lower piston rod 13 penetrate through the well opening 5 and the circulation opening 6, and the well opening flashboards 16 and the circulation opening flashboards 17 are arranged on the upper piston rod 12 and the lower piston rod 13; the upper piston slide block 14 drives the upper piston rod 12 to move, and the lower piston slide block 15 drives the lower piston rod 13 to move; the rear end of the piston housing 11 is provided with an indication rod cover 18, and the rear ends of the upper piston rod 12 and the lower piston rod 13 can extend into the indication rod cover 18 to display the working state of the piston rods.

Under the drilling state, the upper piston slide block 14 and the lower piston slide block 15 synchronously move forwards under the hydraulic action, so that the through circulation port flashboard 17 blocks the through circulation port 6, and the through wellhead flashboard 16 opens the wellhead 5; at this point, the liquid inlet 4 and the well opening 5 form a passage for the slurry to pass to the surface manifold 2.

In a drill stopping state, the upper piston slide block 14 and the lower piston slide block 15 synchronously move backwards under the action of hydraulic pressure, so that the through well opening flashboard 16 blocks the through well opening 5, and the through circulation opening flashboard 17 opens the through circulation opening 6; at the moment, the liquid inlet 4 and the circulation opening 6 form a passage, so that the mud is led to the circulation tank for pressure relief.

In a non-working state, such as maintenance and the like, the upper piston slide block 14 and the lower piston slide block 15 can move in a staggered manner in tandem, and at the moment, the well opening 5 and the circulation opening 6 are respectively blocked by the well opening flashboard 16 and the circulation opening flashboard 17 of the upper piston rod 12 or the lower piston rod 13, so that the safety is ensured.

The pipeline distribution valves 9 are manually controlled, and as the well opening ports 5 of the three mud pumps are communicated, one pipeline distribution valve 9 is closed in a drilling state, and mud can be completely led to the other ground manifold 2, so that the flow path control of the two ground manifolds 2 is realized.

The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.

Claims

1. A slurry manifold distribution system, characterized by: the system comprises three groups of mud tanks (1), two ground manifolds (2), a circulating tank and a mud remote distribution mechanism; the mud remote distribution mechanism consists of three mud pumps, each mud pump comprises a shell (3), a liquid inlet (4), a well opening (5), a circulation opening (6) and a piston assembly (7) are arranged on each shell (3), and the piston assembly (7) controls the liquid inlet (4) to form a passage with the well opening (5) or the circulation opening (6); three mud tanks (1) are respectively connected with the liquid inlets (4) of three mud pumps, the through circulation ports (6) of the three mud pumps are connected with the circulation tank through circulation pipelines (8), the through well ports (5) of the three mud pumps are communicated, the through well ports (5) of the two mud pumps are respectively connected with two ground manifolds (2), and pipeline distribution valves (9) are arranged at the two through well ports (5) connected with the ground manifolds (2).

2. The mud manifold distribution system of claim 1, wherein: and one-way check valves are arranged in the two ground manifolds (2).

3. The mud manifold distribution system of claim 1, wherein: and a passage connected with the circulating tank is arranged on a pipeline connecting the mud tank (1) and the liquid inlet (4).

4. The mud manifold distribution system of claim 1, wherein: the three mud pumps are arranged side by side, the drifting port (5) of the mud pump positioned in the middle is provided with a T-shaped three-way joint, the drifting ports (5) of the mud pumps positioned on two sides are connected with the T-shaped three-way joint of the mud pump positioned in the middle through corner three-way joints, and the corner three-way joints of the mud pumps positioned on two sides are connected with a pipeline distribution valve (9).

5. The mud manifold distribution system of claim 1 or 4, wherein: the pipeline distribution valve (9) is a manual valve.

6. The mud manifold distribution system of claim 1, wherein: the through circulation ports (6) of the three mud pumps are connected through a right-angle tee joint.

7. The mud manifold distribution system of claim 1, wherein: the piston assembly (7) comprises a piston shell (11), an upper piston rod (12) and a lower piston rod (13), and an upper piston slide block (14) and a lower piston slide block (15) are arranged in the piston shell (11); the upper piston rod (12) and the lower piston rod (13) penetrate through the well opening (5) and the circulation opening (6), and the upper piston rod (12) and the lower piston rod (13) are respectively provided with a well opening flashboard (16) and a circulation opening flashboard (17); the upper piston slide block (14) drives the upper piston rod (12) to move, and the lower piston slide block (15) drives the lower piston rod (13) to move.

8. The mud manifold distribution system of claim 7, wherein: an indicating rod cover (18) is arranged at the rear end of the piston shell (11), and the rear ends of the upper piston rod (12) and the lower piston rod (13) can extend into the indicating rod cover (18).